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參數資料
| 型號： | HT9480 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Pager Controller |
| 中文描述： | 傳呼機控制器 |
| 文件頁數： | 17/57頁 |
| 文件大小： | 1541K |
| 代理商： | HT9480 |
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Reset
There are five ways in which a reset can occur:
Power on reset (POR)
RE S reset during normal operation
RE S reset during HALT
WDT time-out reset during normal operation
WDT time-out reset during HALT
The WDT time-out during HALT is different
from other chip reset conditions, since it can
perform a “warm reset” that just resets the PC
and SP, leaving the other circuits to keep their
state. Some registers remain unchanged during
other reset conditions. Most registers are reset
to the “initial condition” when the reset condi-
tions are met. By examining the PD and TO
flags, the program can distinguish between dif-
ferent “chip resets”.
TO
PD
R E SE T Conditions
0
0
Power on reset
u
u
RE S reset during normal
operation
0
1
RES wake-up HALT
1
u
WDT time-out during normal
operation
1
1
WDT wake-up HALT
Note:“u” means “unchanged”
If crystal mask option is selected, the
μ
C clock
can be fed by X1, X2 decoder input clock (See
Application Circuit 2).
The functional units chip reset status is shown
in the following table.
PC
0000H
Interrupt
Disabled
Prescaler
Cleared
WDT
Cleared. After master
reset, WDT starts
counting.
Programmable
timer Counter
Off
Timer/event
Counter
Off
Programmable
Tone Generator
Off
Pager Decoder
Off
Input/output Ports
input mode
SP
Points to the top of the
stack
Reset circuit
Reset configuration
HT9480
17
23th Feb ’98
相關PDF資料 |
PDF描述 |
|---|---|
| HT95168 | Caller ID Telephone IC |
| HT9580 | Character Pager Controller |
| HT95A30P | 8-Bit LCD Type Phone Controller MCU |
| HT95L300 | 8-Bit LCD Type Phone Controller MCU |
| HT95A20P | 8-Bit LCD Type Phone Controller MCU |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT9480_02 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit Numerical Pager Controller MCU |
| HT94804 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Numeric Pager Controller ??(Simplified Chinese Version Only) |
| HT-95 | 制造商:FCI 功能描述:RATCHET CRIMP TOOL 制造商:FCI 功能描述:RATCHET CRIMP TOOL; Crimp Size:32AWG to 22AWG; For Use With:Crimp-to-Wire PV Receptacles & Pins ;RoHS Compliant: NA |
| HT95168 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Caller ID Telephone IC |
| HT9580 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Character Pager Controller |
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